Symplectic conjectures for sums of divisor functions and explorations of an orthogonal regime

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Hauptverfasser: Kuperberg, Vivian, Lalín, Matilde
Format: Preprint
Veröffentlicht: 2022
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author Kuperberg, Vivian
Lalín, Matilde
author_facet Kuperberg, Vivian
Lalín, Matilde
contents In [arXiv:2107.01437], the authors studied the mean-square of certain sums of the divisor function $d_k(f)$ over the function field $\mathbb{F}_q[T]$ in the limit as $q \to \infty$ and related these sums to integrals over the ensemble of symplectic matrices, along similar lines as previous work of Keating, Rodgers, Roditty-Gershon and Rudnick [arXiv:1504.07804] for unitary matrices. We present an analogous problem yielding an integral over the ensemble of orthogonal matrices and pursue a more detailed study of both the symplectic and orthogonal matrix integrals, relating them to symmetric function theory. The function field results lead to conjectures concerning analogous questions over number fields.
format Preprint
id arxiv_https___arxiv_org_abs_2212_04969
institution arXiv
publishDate 2022
record_format arxiv
spellingShingle Symplectic conjectures for sums of divisor functions and explorations of an orthogonal regime
Kuperberg, Vivian
Lalín, Matilde
Number Theory
11M50, 11T55
In [arXiv:2107.01437], the authors studied the mean-square of certain sums of the divisor function $d_k(f)$ over the function field $\mathbb{F}_q[T]$ in the limit as $q \to \infty$ and related these sums to integrals over the ensemble of symplectic matrices, along similar lines as previous work of Keating, Rodgers, Roditty-Gershon and Rudnick [arXiv:1504.07804] for unitary matrices. We present an analogous problem yielding an integral over the ensemble of orthogonal matrices and pursue a more detailed study of both the symplectic and orthogonal matrix integrals, relating them to symmetric function theory. The function field results lead to conjectures concerning analogous questions over number fields.
title Symplectic conjectures for sums of divisor functions and explorations of an orthogonal regime
topic Number Theory
11M50, 11T55
url https://arxiv.org/abs/2212.04969